regl-scatterplot/dist/regl-scatterplot.min.js

A WebGL-Powered Scalable Interactive Scatter Plot Library

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/**
   * KDBush - A fast static index for 2D points
   * @license ISC License
   * @copyright Vladimir Agafonkin 2018
   * @version 4.0.2
   * @see https://github.com/mourner/kdbush/
   */var de,ve=function(){var e=[Int8Array,Uint8Array,Uint8ClampedArray,Int16Array,Uint16Array,Int32Array,Uint32Array,Float32Array,Float64Array],n=function(){function n(t){var r=arguments.length>1&&void 0!==arguments[1]?arguments[1]:64,o=arguments.length>2&&void 0!==arguments[2]?arguments[2]:Float64Array,i=arguments.length>3?arguments[3]:void 0;if(function(e,n){if(!(e instanceof n))throw new TypeError("Cannot call a class as a function")}(this,n),isNaN(t)||t<0)throw new Error("Unexpected numItems value: ".concat(t,"."));this.numItems=+t,this.nodeSize=Math.min(Math.max(+r,2),65535),this.ArrayType=o,this.IndexArrayType=t<65536?Uint16Array:Uint32Array;var a=e.indexOf(this.ArrayType),c=2*t*this.ArrayType.BYTES_PER_ELEMENT,l=t*this.IndexArrayType.BYTES_PER_ELEMENT,s=(8-l%8)%8;if(a<0)throw new Error("Unexpected typed array class: ".concat(o,"."));i&&i instanceof ArrayBuffer?(this.data=i,this.ids=new this.IndexArrayType(this.data,8,t),this.coords=new this.ArrayType(this.data,8+l+s,2*t),this._pos=2*t,this._finished=!0):(this.data=new ArrayBuffer(8+c+l+s),this.ids=new this.IndexArrayType(this.data,8,t),this.coords=new this.ArrayType(this.data,8+l+s,2*t),this._pos=0,this._finished=!1,new Uint8Array(this.data,0,2).set([219,16+a]),new Uint16Array(this.data,2,1)[0]=r,new Uint32Array(this.data,4,1)[0]=t)}return r=n,i=[{key:"from",value:function(t){if(!(t instanceof ArrayBuffer))throw new Error("Data must be an instance of ArrayBuffer.");var r=v(new Uint8Array(t,0,2),2),o=r[0],i=r[1];if(219!==o)throw new Error("Data does not appear to be in a KDBush format.");var a=i>>4;if(1!==a)throw new Error("Got v".concat(a," data when expected v").concat(1,"."));var c=e[15&i];if(!c)throw new Error("Unrecognized array type.");var l=v(new Uint16Array(t,2,1),1)[0];return new n(v(new Uint32Array(t,4,1),1)[0],l,c,t)}}],(o=[{key:"add",value:function(e,n){var t=this._pos>>1;return this.ids[t]=t,this.coords[this._pos++]=e,this.coords[this._pos++]=n,t}},{key:"finish",value:function(){var e=this._pos>>1;if(e!==this.numItems)throw new Error("Added ".concat(e," items when expected ").concat(this.numItems,"."));return t(this.ids,this.coords,this.nodeSize,0,this.numItems-1,0),this._finished=!0,this}},{key:"range",value:function(e,n,t,r){if(!this._finished)throw new Error("Data not yet indexed - call index.finish().");for(var o=this.ids,i=this.coords,a=this.nodeSize,c=[0,o.length-1,0],l=[];c.length;){var s=c.pop()||0,u=c.pop()||0,f=c.pop()||0;if(u-f<=a)for(var d=f;d<=u;d++){var v=i[2*d],h=i[2*d+1];v>=e&&v<=t&&h>=n&&h<=r&&l.push(o[d])}else{var p=f+u>>1,y=i[2*p],m=i[2*p+1];y>=e&&y<=t&&m>=n&&m<=r&&l.push(o[p]),(0===s?e<=y:n<=m)&&(c.push(f),c.push(p-1),c.push(1-s)),(0===s?t>=y:r>=m)&&(c.push(p+1),c.push(u),c.push(1-s))}}return l}},{key:"within",value:function(e,n,t){if(!this._finished)throw new Error("Data not yet indexed - call index.finish().");for(var r=this.ids,o=this.coords,i=this.nodeSize,c=[0,r.length-1,0],l=[],s=t*t;c.length;){var u=c.pop()||0,f=c.pop()||0,d=c.pop()||0;if(f-d<=i)for(var v=d;v<=f;v++)a(o[2*v],o[2*v+1],e,n)<=s&&l.push(r[v]);else{var h=d+f>>1,p=o[2*h],y=o[2*h+1];a(p,y,e,n)<=s&&l.push(r[h]),(0===u?e-t<=p:n-t<=y)&&(c.push(d),c.push(h-1),c.push(1-u)),(0===u?e+t>=p:n+t>=y)&&(c.push(h+1),c.push(f),c.push(1-u))}}return l}}])&&l(r.prototype,o),i&&l(r,i),Object.defineProperty(r,"prototype",{writable:!1}),r;var r,o,i}();function t(e,n,o,i,a,c){if(!(a-i<=o)){var l=i+a>>1;r(e,n,l,i,a,c),t(e,n,o,i,l-1,1-c),t(e,n,o,l+1,a,1-c)}}function r(e,n,t,i,a,c){for(;a>i;){if(a-i>600){var l=a-i+1,s=t-i+1,u=Math.log(l),f=.5*Math.exp(2*u/3),d=.5*Math.sqrt(u*f*(l-f)/l)*(s-l/2<0?-1:1);r(e,n,t,Math.max(i,Math.floor(t-s*f/l+d)),Math.min(a,Math.floor(t+(l-s)*f/l+d)),c)}var 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